c# Checks all incoming parameters for null in a WebApi Controller

CheckModelForNullAttribute.cs

using System;
using System.Web.Http.Controllers;
using System.Web.Http.Filters;

namespace Payments.Productization.Process.FilterAttributes
{
    [AttributeUsage(AttributeTargets.Class)]
    public class CheckModelForNullAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(HttpActionContext context)
        {
            if (context == null) throw new ArgumentNullException("Input Payload was malformed, invalid, or empty");

            foreach (var arg in context.ActionArguments)
            {
                if (arg.Value == null)
                {
                    throw new ArgumentException("Input Payload was malformed, invalid, or empty", arg.Key);
                }
            }

            base.OnActionExecuting(context);
        }
    }
}

Inside of every API route we had a null check for all the parameters in the controller route function. Decided to move all that code to one place